Single board provides wireless RS232 interface
A Radiometrix product story
Edited by the Electronicstalk editorial team Jul 8, 2008
Two units can be used as a serial RS232 cable replacement in many 9600baud half-duplex applications.
The TDi2 from Radiometrix is a RS232 interface board which combines a TDL2A 433-9 OEM multichannel wireless modem module (operating at a half-duplex serial datarate of 9600bits/s), an RS232 driver, a 9-way DB9F connector, helical SMA antenna and power connectors, and a local 5V voltage regulator.
A pair can be used as a serial RS232 cable-replacement in many 9600baud half-duplex applications.
It just needed to be hooked up to a 6 to 15V power supply, and it operates without the need for any additional interface circuitry.
Status LEDs indicate reception of valid data packets and power on, and the board can be enabled by DTE asserting DTR.
The synthesiser based TDL2A module operates on five nonoverlapping frequencies in the 433MHz European ISM band with option to choose eight addressed point-to-point links.
Its -107dBm sensitive receiver and full 10mW transmit output power combine to offer a typical range of well over 200m.
This compact (61 x 33mm, excluding antenna), highly integrated wireless device is particularly suitable for portable applications such as remote data acquisition and industrial telemetry systems, and interfaces easily to handheld terminals, PDAs, laptop computers and data loggers.
It conforms to both EN300 220-3 and EN301 489-3 standards.
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